Since there is a minor rev change and I wanted to get off the beta cycle on my main system partitions I tried installing the app store release download over Beta 11 (GM Seed) on my Macbook Pro 2018. It hung on the final boot before opening the login screen - the white progress bar reaches the end and stops. I installed a second time - same thing. Verbose boot works fine until it brings up the GUI. I get a pointer but no login, just a black screen.
I am now trying to revert to the beta 11 to see whether that works. If not I will be install into anopther container and migrate.
Has anybody else seen anything like this? I am hesitant to upgrade my Mac Pro now.